A Study on Flash Over Delay Effects on Applied Plate-Fire Spread Prevention Method at Sandwich Panels Structure

Abstract

Sandwich panels which are having the both sides are bonded with a heat insulating material with an iron plate are used as factories, warehouse structures as advantages of convenience in construction at economic efficiency of material cost. However, in a panel structure constructed by continuous joining of sandwich panels, a joint portion where a panel and a panel are connected is generated. The joint part is a part which is easily vulnerable to fire because flames easily flow into the melting and deformation of the iron plate during fire. The flames flowing into the panel induce diffusion of fire by rapid burning, causing damage of human life and property. In this research, we developed a flame spread prevention plate to prevent spreading of sandwich panel. This is an improvement of the workability by the anti-spreading construction method of the existing previous research, it can be applied independently to the connecting part where the panel and the panel are coupled, designed to prevent inflow and spreading of flame did. The actual fire test of the test method of KS F ISO 13784-1 of the sandwich panel specimen was conducted and the burning behavior corresponding to the presence or absence of application of the flame spread prevention plate was grasped at the panel connection part and its effect was measured. Inserting a fire spreading plate into the test result panel connecting part is measured by delaying the flashover, prevention of collapse of the specimen, and temperature rise of the opening, effectively improving the fire safety of the panel structure It was confirmed as a method that can be secured. It is judged that panel structure will contribute to ensuring fire safety by applying the fire spread prevention construction method of various methods ensuring the workability and economy of panel connection vulnerable to fire.

Experimental Study to Estimate the Required Flow of Fire Extinguishing System for Flame Spread Prevention on Composite Panel

“…(1,2) 이에 따 라 국내에서는 내화 및 난연 심재 개발을 중심으로 연구가 진행되었으며, 패널 사이에 철판을 삽입하여 화재확산을 방 지하는 연구도 진행되었다. (3,4) 본 연구에서는 복합패널 소화 설비의 소화수 소요유량을 산정하기 위하여 시험 장치를 제 작하였으며, 실물화재 실험을 통하여 성능을 검증하였다.…”

Development of Flame Spread Prevention Systems for Combustible Composite Panels Using Water Screen Technology

“…, 시공적인 측면에서 패널의 연결부에 철 판을 설치하여 (3,4) -Maximum temperature in furnace shall not exceed final equilibrium temperature by 20 K for 20 min after starting the heating test (If not reached equilibrium temperature within 20 min, mean temperature for last 1 min shall be considered the final equilibrium temperature) -Mass attenuation rate shall be 30% or less.…”

A Study on the Cone Calorimeter Evaluation Method of Sandwich Panels

“…(2) 샌드위치패널을 포함한 건축물 마감재료는 현행 건축법 시행령 제51조 및 "건축물의 피난·방화등의 기준에 관한 규칙" 에 따라 규정된 난연성 시험 방법으로 성능시험을 수행하고 있다. KS 2.3 실물화재 시험 (5,8,9,11,12)…”

“…또한, 화염이 발생 후에도 순간 열방출률이 높게 지속되는 양상을 보이며 화염이 계속해서 지속되는 결과를 확인할 수 있다. 심재의 경우에는 모두 시 험 직 후 화염이 발생하여 단시간에 발생된 열방출률이 높 은 것을 확인할 수 있다.4.2 실물화재 실험 결과(5,11,12) Heat Release Rate) 측정 그래프이다.ISO 13784-1에 따라 열방출율이 1,000 kW를 초과하면 플래 시오버가 발생한 것으로 한다. ISO 13784-1 시험의 경우 합 부판정의 기준은 없으며, 플래쉬오버 도달 시간을 통하여 피난시간을 산정하는 시험이라고 할 수 있다.…”